如何返回org.springframework.http.ResponseEntity包含數據和文件

Question

我有方法getUser的restful spring控制器，我希望這個方法返回用戶數據：名稱，年齡，城市等，以及用戶圖像。

如何在一個響應中返回java對象和文件？

    @RequestMapping(value = "/getUser", method = RequestMethod.GET)
    @ResponseBody
    public ResponseEntity getUser(@RequestBody UserRequest req) 
    {
        User user=userProfileService.getUserProfileByEmail(req.getEmail());
        Resource resourceImg1 = new ServletContextResource(servletContext, "D:/images/userImg1.jpg");
        Resource resourceImg2 = new ServletContextResource(servletContext, "D:/images/userImg2.jpg");
        List<Resource> resourcesList = new ArrayList<Resource>();
        resourcesList.add(resourceImg1);
        resourcesList.add(resourceImg2);
        return new ResponseEntity(user, resourcesList, new HttpHeaders(), HttpStatus.OK);
    }

我想要返回圖像和用戶

Answer 1

您的響應主體需要是單個對象。 你最好的選擇是創建一個像這樣的對象

public class UserWithResources() {
    private User user;
    private List<Resources> resources;
    ...etc
}

然后在您的響應中返回UserWithResources

Answer 2

你可以使用map來包裝數據，

    @RequestMapping(value = "/getUser", method = RequestMethod.GET)
    @ResponseBody
    public ResponseEntity getUser(@RequestBody UserRequest req) 
    {
        User user=userProfileService.getUserProfileByEmail(req.getEmail());
        Resource resourceImg1 = new ServletContextResource(servletContext, "D:/images/userImg1.jpg");
        Resource resourceImg2 = new ServletContextResource(servletContext, "D:/images/userImg2.jpg");
        List<Resource> resourcesList = new ArrayList<Resource>();
        resourcesList.add(resourceImg1);
        resourcesList.add(resourceImg2);
        Map<String,Object> dataMap=new HashMap<String,Object>();
        dataMap.put("user",user);
        dataMap.put("resourcesList",resourcesList);
        return new ResponseEntity(dataMap,new HttpHeaders(), HttpStatus.OK);
    }